Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Daniel Koren0
Ryan P. Whitehouse0
Date of Patent
April 13, 2010
0Patent Application Number
113326940
Date Filed
January 13, 2006
0Patent Primary Examiner
Patent abstract
A perforated plate includes a plurality of holes divided into a first set of holes and a second set of holes. Each hole in the second set of holes has an area smaller than that of each hole in the first set; and the holes of the first and second sets are arranged with respect to one another to form a graphic pattern.
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